1. He Pingan, Lin Yinsen, Yu Mozhi, etc. CCD Image Measuring System for Lens Focal Length[J]. Journal of Wuhan University of Surveying and Mapping Technology, 1999(01):83–85.
2. Huang Shengye, Lin Jiaming, Sha Dingguo, etc. Research on focal length measurement of positive lens based on liquid crystal division and digital image processing [J]. Optical Technology, 2002(01):74–76.
3. Zhang Wei, Zhang Xiaohui, Liu Zhenjiang. Research on automatic focusing method of optical bench measuring lens focal length[J]. Applied Optics,2002(06):25–28+35.
4. Research on Image Sharpness Evaluation Method for Autofocus [D];Li;University of Chinese Academy of Sciences (Xi’an Institute of Optics and Fine Mechanics, Chinese Academy of Sciences),2016
5. Fast autofocus algorithm for automated microscopes